Flower-Visiting Insects
of Compass Plant
Silphium laciniatum (Compass Plant)
(Bees collect pollen or suck nectar; flies mostly suck nectar; beetle activity is unspecified; other insects suck nectar; observations are from Robertson, Petersen, Smith et al., and Williams as indicated below)
Bees (long-tongued)
Apidae (Apinae): Apis mellifera sn (Rb); Apidae (Bombini): Bombus bimaculatus (Pt), Bombus fervidus (Pt), Bombus fraternus (Smh), Bombus griseocallis sn (Rb), Bombus impatiens (Smh), Bombus pensylvanicus sn fq (Rb, Smh), Bombus vagans (Pt); Anthophoridae (Ceratinini): Ceratina dupla dupla sn (Rb); Anthophoridae (Epeolini): Triepeolus concavus sn (Rb), Triepeolus lunatus concolor sn (Rb); Anthophoridae (Eucerini): Melissodes agilis sn fq (Rb), Melissodes bimaculata bimaculata sn (Rb), Melissodes coloradensis sn cp fq (Rb), Melissodes communis communis (Smh), Svastra aegis (Smh), Svastra obliqua obliqua sn (Rb, Smh); Anthophoridae (Xylocopini): Xylocopa virginica (Smh); Megachilidae (Megachilini): Megachile brevis brevis sn (Rb), Megachile parallela parallela sn (Rb), Megachile pugnatus sn cp (Rb), Megachile xylocopoides (Smh)
Bees (short-tongued)
Halictidae (Halictinae): Agapostemon texanus texanus sn cp (Rb), Agapostemon virescens sn cp (Rb), Augochlorella aurata (Smh), Augochlorella gratiosa (Smh), Halictus ligatus cp np fq (Rb, Smh), Halictus rubicundus (Smh), Lasioglossum imitatum cp np (Rb, Smh), Lasioglossum pilosus pilosus cp np (Rb)
Flies
Syrphidae: Allograpta obliqua sn (Rb), Eristalis stipator sn (Rb), Eristalis transversus sn (Rb), Tropidia mamillata sn (Rb); Bombyliidae: Systoechus vulgaris sn (Rb), Villa alternata fp np (Rb); Conopidae: Zodion fulvifrons sn (Rb), Zodion obliquefasciatum sn (Rb)
Butterflies
Nymphalidae: Danaus plexippus sn (Rb); Pieridae: Colias philodice sn fq (Rb)
Beetles
Cantharidae: Chauliognathus pennsylvanicus (Wms)